Referral for Fine Needle Biopsy of Thyroid Nodules

Key Procedural Requirements

• The procedure must be performed under ultrasound guidance, as this is the preferred method recommended by multiple guidelines due to superior accuracy, economy, safety, and effectiveness 1

Important Clinical Context

• All patients with thyroid nodules meeting criteria for biopsy should undergo puncture biopsy to confirm pathological diagnosis, with FNA as the preferred method (strong recommendation, high-quality evidence) 1
• FNA should be performed for any thyroid nodule >1 cm, and for nodules <1 cm if suspicious ultrasonographic features are present (hypoechogenicity, microcalcifications, irregular borders, solid composition, abnormal blood flow) 2

Common Pitfalls to Avoid

• Avoid referring to providers without ultrasound capability - the procedure must be ultrasound-guided to meet current guideline standards 1, 2
• Be aware that follicular neoplasms may yield indeterminate results requiring surgical excision for definitive diagnosis, as FNA cannot distinguish follicular adenoma from adenocarcinoma 1, 2